• Infinity Reference X Series Car Speakers
  • Sonic Electronix: The X Factor when Shopping Electronics
Previous page Infinity REF-4002cfx: main picture thumbnail Infinity REF-4002cfx: alternate picture thumbnail Infinity REF-4002cfx: alternate picture thumbnail Infinity REF-4002cfx: alternate picture thumbnail Infinity REF-4002cfx: alternate picture thumbnail Next page

Infinity REF-4002cfx

4" 2-Way Reference X Series Coaxial Car Speakers

No customer reviews yet. Be the first!

Will this fit my car?

Select Vehicle >

Specials with this product

  • Free Ground Shipping to the 48 statesdetails

Price Information

$139.95

–$50.00

$89.95

Add an Optional Extended Warranty

Add

$10.99

$

In Stock

save to wish list

Why Shop Sonic?

SONY Marine Gear Giveaway

Customer Testimonial

I mis entered my address info and Shayna was very quick and courteous to respond to the situation and fixed up the order right away once I updated my info. Thank you!

- Shadd from Saskatoon, Saskatchewan

See more…

  • Get a Free Sound Dampening Speaker Kit with Purchase!
    For a limited time, get a free NVX SDSK2 Speaker Kit with a qualifying pair of speakers! Sound dampening will eliminate rattles, insulate against heat, and also improve the sound and output of your speakers!
    REF-4002cfx thumbnail
    +
    FREE
    SDSK2 thumbnail
    =

    $89.95

    (was $104.94)

True 4 Ohm Impedance

These speakers are specially designed with true 4ohm technology. The impedance of these speakers are 3ohms, but when you pair them with thin factory wiring, the impedance will naturally rise up to a true 4ohms resulting in a maximum amount of power draw from your 4ohm rated factory receiver, aftermarket deck, or external amplifier. What it comes down to is efficiency. If you need a speaker that will get the most out of your current sound system, the Reference X series is for you.

Plus One Cone Technology

Each of the Reference X speakers features plus one woofer cone technology. This means the cone has been designed to be slightly larger than comparable speakers, giving you even more output on the same amount of power. This drastically increases the efficiency of the speaker, and also extends the frequency response even lower to give you that nice thump you’ve been looking for.

The Reference of Audio

Want an easy upgrade for your factory speakers without going over your budget? The Infinity Reference X Series is for you. Its engineered to bring your factory audio system to life, or to add clarity and depth to an aftermarket system. With innovative, patented technologies, and the kind of premium quality and construction that you would expect from the worlds top-selling premium car speaker brand, Infinity Reference X speakers will transform your listening experience into something amazing.

General Features:

  • 4" Reference X Series 2-Way Car Speakers
  • Power Handling:
    • Peak: 210 watts per pair / 105 watts each
    • RMS: 70 watts per pair / 35 watts each
  • Polypropylene cone material
  • Plus One woofer cone technology maximizes cone surface area
  • Butyl Rubber speaker surround
  • 1" edge-driven Textile Dome tweeter
  • Adjustable tweeter level attenuation
  • UniPivot tweeters allow you to direct the sound
  • High-temperature voice coil design
  • Ferrite magnet motor structure is vented for fast cooling
  • 3 ohms impedance works with all amps rated for 4-ohm operation
  • True 4 ohm technology incorporates speaker impedance with factory speaker wire impedance for maximum power
  • Frequency response: 75-21,000 Hz
  • Top-mount depth: 1-7/8"
  • Sensitivity: 92dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Priced Per Pair

Product History:

Infinity REF-4002cfx thumbnail
(newest, current model)
Infinity 4032cf thumbnail
(previous model, replaced by Infinity REF-4002cfx)
Infinity 4022i thumbnail
(previous model, replaced by Infinity Reference 4032cf)
Infinity 4012I thumbnail
(previous model, replaced by Infinity Reference 4022i)
Infinity 4002I thumbnail
(previous model, replaced by Infinity Reference 4012i)

Sonic Electronix, Inc. can only ship Infinity products within the United States of America.

Speaker Specifications
Speaker Size 4"
Design 2-way
Tweeter Design Dome
Tweeter Size 1"
Tweeter Composition Textile
Woofer Composition Polypropylene
Woofer Surround Butyl Rubber
Peak Power Handling 105 watts
RMS Power Handling 35 watts
Sensitivity 92 dB
Frequency Response 75 - 21000 Hz
Impedance (Per Voice Coil) 4 ohms
Shallow Mount Installation Yes
Top-Mount Depth 1-7/8"
Cutout Dimensions 3-3/4" x 3-3/4" 
Speaker Grilles No
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration 1 year
Labor Warranty Duration 1 year
Warranty Provider Manufacturer
Nobody has rated this product yet.
Share your thoughts with others:
Speaker Wire
Upgrade your factory speaker wire to aftermarket speaker wire and hear the difference! Using thicker gauges, newer technology, and higher quality materials, aftermarket speaker wire is key to upgrading the sound in your car.
  Product Price Add?
20 ft. of 16 AWG KICKER X-Series Speaker Wire 20 ft. of 16 AWG KICKER X-Series Speaker Wire
Get high quality sound from Kicker's twisted-pair, true to gauge speaker wire.
$17.95
50 ft. of 14 AWG StreetWires Speaker Cable 50 ft. of 14 AWG StreetWires Speaker Cable
Streetwires Super Cable provides a zero-grip insulation for a smooth install as well as true gauge twisted wire construction.
$39.99
Sound Dampening Material
Get optimal sound from your new speakers with some high quality sound dampening material. It will keep the road noise out and the music inside the car.
  Product Price Add?
NVX SDSK2 Speaker Kit NVX SDSK2 Speaker Kit
Eliminates speaker panel distortion and reduces vibration, rattles, and squeaks!
$14.99
NVX SDRLR1 Sound Dampening Rubber Roller NVX SDRLR1 Sound Dampening Rubber Roller
Install your Sound Dampening with ease! This heavy duty rubber roller is designed specifically to install your NVX products!
$8.95
Speaker Baffles, Spacers, and Depth Extenders
Mount your speakers in the location that you need with these speaker spacers, extenders, and adapters.
  Product Price Add?
3/4" Depth Extender for 4" Speakers 3/4" Depth Extender for 4" Speakers
Add 3/4" of extra space when installing your speakers.
$8.99
Installation, Tools & Accessories
Get all of the tools and accessories to install your new speakers like a professional, or take your car to an expert and have them installed by redeeming professional installation cards.
  Product Price Add?
Car Stereo and Speaker Installation Tool Kit Car Stereo and Speaker Installation Tool Kit
Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.
$14.99
Door Panel & Upholstery Remover Tool Door Panel & Upholstery Remover Tool
The ideal tool for removing your car's door panels to replace you speakers!
$11.99
Universal Window Handle Remover Tool Universal Window Handle Remover Tool
Designed to easily remove the manual window handles without breaking any interior pieces.
$11.99
Universal Wire Puller & Grabber Universal Wire Puller & Grabber
Running wires has never been easier! This wire puller allows you to run wires through those hard to reach places!
$8.99
22-18 AWG Butt Connectors 22-18 AWG Butt Connectors
These red butt connectors are perfect for connecting the speaker wire when replacing your factory speakers!
$4.99
16-14 AWG Butt Connectors 16-14 AWG Butt Connectors
These blue butt connectors are ideal when connecting thicker speaker wire your new aftermarket speakers!
$4.99
Tone Generators and Sound Testing Equipment
Optimize your new system's sound quality by testing and calibrating all of your components with these items.
  Product Price Add?
Scosche SPL Meter Scosche SPL Meter
Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB.
$24.99
AutoSound 2000 CD-102 AutoSound 2000 CD-102
High frequency test CD specifically designed for the set-up and evaluation of sound system imaging and placement.
$12.99
AutoSound 2000 CD-103 AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.
$12.99
Main Product
  Product Price Add?
Infinity REF-4002cfx Infinity REF-4002cfx $89.95

Product Summary

Manufacturer: Infinity
Model number: REF-4002cfx
UPC: 050667368531
Weight: 4.50 lbs
Internal SKU: ref-4002cfx
Internal product ID: 61825